EKG Test

Which valves prevents blood from flowing backwards into the heart from the arteries

• aortic and pulmonary valves
• tricuspid and mitral valves
• semilunar and bicuspid valves
• only the tricuspid valve

What are the names of the chambers of the heart which collect  blood from veins

• ventricles
• atria
• aorta
• tricuspid

How many layers is the heart composed of

• 1
• 2
• 3
• 4

Located between the left ventricle and aorta

• aortic valve
• AV valve
• mitral valve
• aorta

located between the left atrium and the left ventricle and has 2 cusps; also called the bicuspid valve

• left ventricle
• semilunar valve
• mitral valve
• both a and b

largest artery in the body

• jugular
• aorta
• temporal
• femoral

purpose is to prevent of blood thereby assuring unidirectional flow through the heart

• heart valves
• pulmonic valve
• mitral valve
• left ventricle

ability of the cardiac pacemaker cells to spontaneously initiate their own electrical impulse without being stimulated from another source.

• automaticity
• sympathetic
• parasympathetic
• conductivity

caused by disease of the heart valves or other structural abnormalities

• heart sounds 
• heart mumurs
• heart vessels
• conductivity

the charge of resting cardiac cells inside as compared to outside

• positive
• negative
• neutral
• both a and b